Terrence Howard is nursing stitches on his hand after accidentally punching the windshield of his car while practising kung-fu moves behind the wheel.The embarrassed actor appeared on America's The Tonight Show with Jay Leno on Tuesday (05Oct10) and cringed as he showed off his surgical wound. Explaining the accident he said: "I'm sitting in the car and I'm thinking about the Bruce Lee days and all of the kung-fu stuff that people used to do, and I'm trying to drive and I made a fool of myself in the process. "You know how Bruce Lee used to do that little short one-inch punch? I'm thinking I can do that in front of the rear view mirror. That one-inch punch. That mirror hit back. I broke the mirror, broke the windshield - I'm strong!" Howard immediately took himself to the hospital, where his wife filmed him screaming as doctors stitched up two of his fingers. Sharing the footage, he laughed, "I filmed it when I was going to the hospital because it looked like they were killing me!"